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Principles of Inheritance and Variation

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Advanced Botany

Plant Growth and Development
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Ecosystem
Biodiversity and Conservation
Environmental Issues
Microbes in Human Welfare
Strategies for Enhancement in Food Production
Molecular Basis of Inheritance
Principles of Inheritance and Variation
Sexual Reproduction in Flowering Plants
Reproduction in Organisms
The Living World
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Transport in Plants
Cell Cycle and Cell Division
Cell-The Unit of Life
Anatomy of Flowering Plants
Morphology of Flowering Plants
Plant Kingdom
Biological Classification
  1. In Down’s syndrome of a male child, the sex complement is
    1. XO
    2. XY
    3. XX
    4. XXY
Correct Option: B

Down’s syndrome is due to trisomy of 21st chromosome and is an autosomal abnormality.


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